4121420641 has 16 divisors (see below), whose sum is σ = 4505982544. Its totient is φ = 3746663424.

The previous prime is 4121420629. The next prime is 4121420651. The reversal of 4121420641 is 1460241214.

It can be written as a sum of positive squares in 8 ways, for example, as 773062416 + 3348358225 = 27804^2 + 57865^2 .

It is a cyclic number.

It is not a de Polignac number, because 4121420641 - 2¹¹ = 4121418593 is a prime.

It is a super-2 number, since 2×4121420641² = 33972216200121701762, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4121420621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 715525 + ... + 721261.

It is an arithmetic number, because the mean of its divisors is an integer number (281623909).

Almost surely, 2^4121420641 is an apocalyptic number.

It is an amenable number.

4121420641 is a deficient number, since it is larger than the sum of its proper divisors (384561903).

4121420641 is a wasteful number, since it uses less digits than its factorization.

4121420641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6580.

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 4121420641 is about 64198.2915738417. The cubic root of 4121420641 is about 1603.3031553322.

Adding to 4121420641 its reverse (1460241214), we get a palindrome (5581661855).

The spelling of 4121420641 in words is "four billion, one hundred twenty-one million, four hundred twenty thousand, six hundred forty-one".